Loading Customer data from CSV flat file to Netsuite, as long as I am updating the 'standard' fields data updated correctly. However, when I try to update custom fields I get tha above error. The fields are in the map, from the profile. My operatio is set with Disable Mandatory Custom Field Validation: to True. We use a custom form, and I have the Custom Form Internal ID set in the map to point to the correct form. Any ideas?